GMC 2007 Acadia - Manual (Page 162)

Floor Mats
There is a grommet in the driver side floor mat
that attaches to a hook on the floor of the vehicle.
This allows the mat to remain in position under
your feet and out of reach of the accelerator and
brake pedal. To remove the floor mat, pull the
mat towards the rear of the vehicle until the
grommet can be removed from the hook.
Make sure that the driver side floor mat is properly
placed on the floor so that it does not block the
movement of the accelerator and brake pedal.
Luggage Carrier
{ CAUTION:
If you try to carry something on top of
your vehicle that is longer or wider than
the luggage carrier — like paneling,
plywood, a mattress and so forth — the
wind can catch it as you drive along. This
can cause you to lose control. What you
are carrying could be violently torn off,
and this could cause you or other drivers
to have a collision, and of course damage
your vehicle. You may be able to carry
something like this inside. But, never
carry something longer or wider than the
luggage carrier on top of your vehicle.
162